[release-4.19]: pin Dockerfile images

[rbaturov]

we prefer to pin the image digests as currently done for d/s builts.

[openshift-ci]

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[shajmakh]

For d/s builds we had an automation that would update the digests automatically, I'm unaware that mintmaker support such thing for dockerfiles/rpm lockfiles that are not under the root directory. which means this digest will be there unless manually bumped, do we want that?

[yanirq]

For d/s builds we had an automation that would update the digests automatically, I'm unaware that mintmaker support such thing for dockerfiles/rpm lockfiles that are not under the root directory. which means this digest will be there unless manually bumped, do we want that?

@shajmakh for Dockerfiles not under root directory Mintmaker will do the digests updates , see for example https://github.com/openshift-kni/numaresources-operator/pull/1320/files

For rpm lockfiles that are not under root there is no automated support yet, so for the moment we will update manually until we get support for subdirs OR decide later on to move the lockfiles to root.

[rbaturov]

/retest